شبكة Grandstream GXP1620 وGXP1625

2 SIP accounts / 2 lines with dual-color LEDs
✔ HD audio on handset & speakerphone (wideband audio)
✔ 132×48 backlit graphical LCD display
✔ 3 XML programmable soft keys and navigation/menu keys
✔ 3-way conferencing
✔ EHS support for Plantronics headsets
✔ Dual auto-sensing 10/100 Mbps network ports
✔ Call history and phonebook support (up to ~500–1000 contacts)
✔ Standard VoIP telephony features (hold, transfer, forward, call park/pickup, etc.)
✔ Security (TLS, SRTP) and provisioning options (zero-config with Grandstream UCM, TR-069, encrypted XML)